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Phosphorous slag autoclave aerated concrete building block and preparation method thereof

A concrete block, autoclaved and aerated technology, which is applied to clay preparation devices, chemical instruments and methods, ceramic products, etc., can solve problems such as environmental pollution, phosphorus waste slag occupying space, resource waste, etc., and achieve the effect of reducing production costs

Active Publication Date: 2009-12-23
贵州源隆新型环保墙体建材有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Phosphorus slag is the waste slag discharged from the production of phosphorus by the electric furnace method, and 9 tons of slag are discharged per ton of phosphorus produced. Guizhou Province is an important phosphorus production base, and a large amount of phosphorus slag is produced. At the same time, the piling of phosphorus waste slag also takes up a lot of space, which is easy to cause pollution to the surrounding environment. The reuse of phosphorus waste slag is also an important issue.

Method used

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  • Phosphorous slag autoclave aerated concrete building block and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0012] Example 1: Phosphorus slag 38kg, silica sand 17kg, quicklime 33kg, cement 7kg, gypsum 5kg, aluminum powder 0.15kg, sodium hydroxide 0.2kg, water 50kg

[0013] Mix phosphorus slag, silica sand, gypsum and water, ball mill, and make a mortar with a fineness of 0.08mm square hole sieve with 27% to 30% remaining and a specific gravity of 1.7 to 1.75Kg / L for later use; another quicklime, crushed and dry-processed Grind into a 0.08mm square hole sieve and sieve the remaining 25% to 30% quicklime powder, mix the mortar, quicklime powder, sodium hydroxide and cement, stir, add aluminum powder when the temperature reaches 35°C, stir evenly, pour, After statically stopping in a hot room at 60°C for 3 hours, it is demoulded and cut, and it is ready after 7 hours of autoclaving at 1.3Mpa.

[0014] The above-mentioned autoclaved aerated concrete blocks were tested for performance, and the results are shown in the table below:

[0015]

[0016] The heat transfer coefficient, ther...

Embodiment 2

[0017] Embodiment 2: Phosphorus slag 764.75Kg, silica sand 342.125Kg, gypsum 100.625Kg, water 1006.25Kg are ball milled into slurry, get 2213.75Kg slurry, lime 644.125Kg, cement 140.875Kg, sodium carbonate 3Kg, aluminum powder 2.45Kg and stir into slurry pouring in For a mold with a volume of 3.5 cubic meters, stop in a hot chamber at 60-70°C for 5 hours, then remove the mold and cut it, put it into an autoclave and steam it in 1.2-1.35Mpa steam for 8 hours to get the finished product.

Embodiment 3

[0018] Example 3: Phosphorus slag 30kg, silica sand 20kg, quicklime 35kg, cement 5kg, gypsum 6kg, aluminum powder 0.1kg, water 50kg

[0019] Mix phosphorous slag, silica sand, gypsum and water, and grind them finely with a ball mill to make mortar; crush quicklime, dry grind, then mix mortar, quicklime powder, and cement, stir, and the quicklime reacts with water to release heat to the temperature Add aluminum powder when it reaches 30°C, stir evenly, pour according to the conventional method, stop the hot room, cut, and autoclave for curing.

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Abstract

The invention discloses a phosphorous slag autoclave aerated concrete building block and a preparation method thereof. The phosphorous slag autoclave aerated concrete building block is prepared by adding water in phosphorous slag, silica sand, calcium lime, cement, gypsum and aluminium powder. Compared with the prior art, the method uses slag produced by phosphorus production as a main material for providing siliceous composition to produce the autoclave aerated concrete building block with light weight and insulation, can produce the autoclave aerated concrete building blocks with different levels according to different requirements, fully utilize the phosphorous slag waste, simultaneously also can reach or slightly excess the performances of the traditional similar building block and achieve the purpose of reusing the waste while reducing the production cost.

Description

technical field [0001] The invention relates to the technical field of autoclaved aerated concrete blocks, in particular to a phosphorus slag autoclaved aerated concrete block and a preparation method thereof. Background technique [0002] Autoclaved aerated concrete block is a new type of lightweight thermal insulation building material made of siliceous materials and calcareous materials through batching, pouring, gas expansion, cutting and steaming. It has been used in my country for 60 years With more than years of production and application history, it is widely used in industrial and civil buildings due to its light weight and good thermal insulation performance. It is currently a new type of wall material with the most mature production technology and application technology. [0003] Autoclaved aerated concrete blocks are light in weight, divided into 300-800kg / m3 according to different grades, which are only about 1 / 3 of clay bricks. High-rise buildings in areas with ...

Claims

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Application Information

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IPC IPC(8): E04C1/00B28C5/00B28B1/14B28B11/24C04B28/14C04B18/04
CPCC04B28/18C04B2111/28Y02P40/60Y02W30/91C04B7/00C04B14/06C04B18/145C04B22/04C04B22/143C04B38/02C04B40/024
Inventor 罗东海帅颂宪梁汉龙宫国义王勇漆贵海
Owner 贵州源隆新型环保墙体建材有限公司
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